R1 Mass Gainer by Rule 1 – Real Calories. Real Mass. No Fillers.
High-Calorie Support for Serious Size Gains

When it comes to packing on serious size, food alone can fall short. R1 Mass Gainer by Rule 1 is built to bridge that gap—with a powerful 6:1 carb-to-protein ratio and 1,220 quality calories per serving, this formula delivers the fuel your body needs to grow bigger, stronger, and faster.

Each scoop is packed with 40g of protein from three high-quality whey sources, over 250g of complex carbohydrates, and even includes creatine—one of the most researched and effective muscle-building ingredients on the market.

💥 Why Choose R1 Mass Gainer?

🍽 1,220 Calories Per Serving – Calorie-dense formula to support clean bulking
💪 40g Protein from 3 Sources – Blended for sustained amino delivery
📈 6:1 Carb-to-Protein Ratio – Ideal macronutrient profile for lean mass gain
⚠️ No Banned Substances – Tested and trusted for athletes
🚫 No Creamers, Amino Spiking, or Soy Protein – Just clean, effective ingredients
😋 Delicious Flavours – Great taste without compromise

Whether you’re a hard gainer, off-season athlete, or just need more from your mass-gain nutrition, R1 Mass Gainer helps you break plateaus and build real size—without the junk.

Fuel big. Grow clean. Mass with purpose.